13/11/2025
This adult rhino bull had a large swollen lump on his bum. He was darted and the lump was opened... some some juicy content came out, puss!
The abscess was likely formed after he was dart vaccinated before. Rhinos have thick tough skin, which can be up to 5 cm in some areas! The skin protects them, but at the same time their skin can make it easier for an abscess to form. If a wound occurs, for example from a dart or horn poke, the thick skin can trap bacteria inside. Instead of draining easily, the infection gets sealed off. The immune system responds by sending white blood cells to fight the bacteria, but in the process, dead cells, bacteria, and tissue debris start to accumulate. The body then walls off the area to contain the infection, creating a pus-filled pocket: an abscess.
In rhinos, abscesses can go unnoticed for a while because the swelling may be deep and slow to show. The abscess was opened, thoroughly cleaned and rinsed, and he received long-acting antibiotics.